BEST DEALS THIS WEEK

10 Best Best Head Gasket Sealer - May 2026

19M consumers helped this year.

Last Updated: 27-05-2026

1

Steel Seal SSAMZ Head Gasket Repair – Pour In Engine Head Gasket Sealer for Water Cooling Systems – Works with All Blue Antifreeze Types – Cars, Vans, 4x4s, Trucks & Motorbikes

Steel Seal SSAMZ Head Gasket Repair – Pour In Engine Head Gasket Sealer for Water Cooling Systems – Works with All Blue Antifreeze Types – Cars, Vans, 4x4s, Trucks & Motorbikes

Steel Seal

9.8

9.8

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2

K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

K-Seal Coolant Leak, 236ml | Multi-use Car Radiator & Head Gasket Repair Sealant

K-Seal

9.6

9.6

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3

K-Seal Ultimate Head Gasket & Block Repair | Seal & Fix Coolant Leaks, 472ml

K-Seal Ultimate Head Gasket & Block Repair | Seal & Fix Coolant Leaks, 472ml

K-Seal

9.5

9.5

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4

Nitrox Steel Weld Seal for Head Gaskets, 500 ml

Nitrox Steel Weld Seal for Head Gaskets, 500 ml

Nitrox

9.2

9.2

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5

K-Seal HD Coolant Leak Repair, 472ml | HGV Radiator, Block & Head Gasket Sealant

K-Seal HD Coolant Leak Repair, 472ml | HGV Radiator, Block & Head Gasket Sealant

K-Seal

9.1

9.1

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6

Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

Steel Seal Blown Head Gasket Fix Repair Sealer for 4 Cylinder Engines

Steel Seal

8.8

8.8

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7

BLUE DEVIL POUR AND GO HEAD GASKET SEALANT

BLUE DEVIL POUR AND GO HEAD GASKET SEALANT

BlueDevil Products

8.6

8.6

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8

GREEN DEMON Professional Quality Head Gasket & Block Repair, 473ml | Ceramic Reinforced Sealer | Advanced & Fast DIY Permanent Coolant Leak Seal & Fix | Engine/Cylinder Sealant for Cars, SUVs & Trucks

GREEN DEMON Professional Quality Head Gasket & Block Repair, 473ml | Ceramic Reinforced Sealer | Advanced & Fast DIY Permanent Coolant Leak Seal & Fix | Engine/Cylinder Sealant for Cars, SUVs & Trucks

GREEN DEMON

8.4

8.4

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9

BLOWN HEAD GASKET? HYPER-SEAL A PERMANANT REPAIR SOLUTION!

BLOWN HEAD GASKET? HYPER-SEAL A PERMANANT REPAIR SOLUTION!

ENGINE REVIVE

8.2

8.2

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10

Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres

Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres

Hi-Gear

8.1

8.1

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